Recent content by wiredGuy

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    Can Charges Remain Forever on Insulated Objects?

    Hi, I am interested in learning more about static charges. I've googled around and read a number of very informative sites; however, I am left with a few questions. (the best site btw is http://www.ce-mag.com/mrstatic.html) After reading (http://www.ce-mag.com/archive/02/01/MrStatic.html)...
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    Questions regarding electrostatic charge decay.

    Hi, I've had a pretty good experience with physics forum in the past, so when I ran across something I couldn't find an answer to on the web, I figured why not ask it here.. I found a great introduction to electrostatic charge decay located at...
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    Electromagnetic energy of moving water

    I don't have any references off hand, but I am sure some people can provide some for you; however, the answer lies in the fact that opposites charges repel and like charges attract. In order for the stream to move away from the charged rod, the water molecules would need to align themselves...
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    How Does Gauss's Law Affect the Red Dot in This Scenario?

    Are there parts of my question that are unclear? or is this the wrong forum to be asking the question on? (Generally I find the feedback to be much more active on this board).
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    How Does Gauss's Law Affect the Red Dot in This Scenario?

    So in the second case the green dot moves while the red dot remains in the same place? I was curious if the charges that move to cancel out the effects of the green charge were on the external or internal surface of the cage. Could you also refer me to a place where I can read more about this...
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    How Does Gauss's Law Affect the Red Dot in This Scenario?

    I had a question regarding how Gauss's law works. I have attached an image that depicts two scenarios. Basically, if you assume the blue lines are a conductor and the green and red dots both contain an equal amount of charge, what is the expected behavior of the red dot? As I understand...
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    How Does the Velocity and Radius of a Toilet Paper Roll Affect Its Tearing?

    Sounds somewhat simple. The mass changes over the drop, but that's the only complexity. The mass must change with respect to how much comes off the roll; thus, the change in mass has nothing to do with the radius and everything to do with the speed... d=v1t + 1/2gt^2 -- the mas changing does...
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    How Does the Velocity and Radius of a Toilet Paper Roll Affect Its Tearing?

    I;m sure the angle at which you pull is also a factor. If the component of the force tangent to the surface of the roll is greater, then more force is delivered to the ripping of the sheet than to the rotation of the roll. Also consider the speed it takes to pull a sheet out from underneath...
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    Understanding Magnet Polarity: Magnetic Confusion

    was the permanent magnet's facing side always the same?
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    Max Charge Density of Materials: WiredGuy

    Thank you for your response, it gave me a good direction to head in. It didn't quite click that the thing I was looking for was a tabulation of the work function of a variety of materials. BTW, the factor limiting the charge was the geometry. That is given a constant shape, where the material...
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    Max Charge Density of Materials: WiredGuy

    Hi, I was just wondering if anyone knew if there was a table that listed the maximum charge density different materials can accomidate... Thanks in advanced, - WiredGuy
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